Patents by Inventor Michael Edward Cavendish

Michael Edward Cavendish has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4008495
    Abstract: An endoprosthetic elbow joint device has a humeral component in the form of two like frusto-cones coaxially connected at their narrow ends and with their wider ends mutually convergently inclined to wedge into the intracondylar notch in the humerus when resected. This component is secured with cement, the component end faces being provided with a relieved structure of grooves or ribs extending in the relevant directions of inclination. The device also has an ulnar component of less than semi-circular toroidal form with its radially inner face complementary to and engaged with the above double cone. Again cement fixation is used in the ulna with a suitable relieved structure to key the component. Preferably this structure includes a chordally-directed groove to allow passage of a bone screw longitudinally through the olecranon so that the latter can be detached to expose the implantation site and thereafter reattached.
    Type: Grant
    Filed: June 26, 1975
    Date of Patent: February 22, 1977
    Assignee: National Research Development Corporation
    Inventors: Michael Edward Cavendish, Martin Arthur Elloy
  • Patent number: 3949428
    Abstract: An endoprosthetic knee joint device with separate pairs of femoral and tibial condylar runner and track components is improved in respect of bone cement fixation surfaces, mutually articulatory bearing surfaces, and securement location relative to each other and the relevant bones. The femoral components have L-shaped fixation surfaces defining a slightly obtuse angle, and the tibial component fixation surfaces are tapered. The femoral component bearing surfaces have longitudinal convex curvature of higher and lower order over respective end portions, the tibial component bearing surface has longitudinal concave curvature of lowest order, and these bearing surfaces have complementary lateral curvatures of highest order. All components have recesses at one end to engage a jig assembly which connects with the femur in predetermined relationship and locates the components relative to the natural condyles.
    Type: Grant
    Filed: September 3, 1974
    Date of Patent: April 13, 1976
    Assignee: National Research Development Corporation
    Inventors: Michael Edward Cavendish, John Thomas Matthew Wright